Lace-machine-carriage-threading mechanism



' W. R. SCOTT.

LACE MACHINE CARRIAGE THREADING MECHANISM.

APPLICATION FILED MAH, ISIS.

Pand July I3, 192A.

6 SHEETS-SHEET l.

W. R. SCOT.

-LACE MACHINE CARRIAGE THRADING MECHANISM.

APPLICATION FILED M'AY4. 1916.

Patented July 13, 1920.

6 SHEETS-SHEET 2.

w. a. soon.

LACE MACHINE CARRIAGE THREADING MECHANISM.

APPLICATION FILED MAY 4, 1916. V v I 1,346,790, Patented July 13, 1920.

6 SHEETS-SHEET 3.

W. R. SCOTT.

LACE MACHINE CARRIAGE THREADING MECHANISM.

APPLICATIQN FILED MAN. 1916.

Patented J uly 13, 192).

` 6 SHEETS-SHEET 4.

@y f' wf W. R. SCOTT.

LACE MACHINE CARRIAGE TH'REAQING MECHANISM. APPLICATION HLED- MAY 4. 19'16.

1,346,790, Patented July 13, 1920.

` 6 SHEETS-SHEET 5. 'YGZ W. R. SCOTT.

LACE MACHINE cARmAGE IHRE/wma MEcHANlsM.

APPL|-CAT|-0N- FILED MAY 4. 1915. 1,346,790. Patented July 13, 1920.

6 SHEETS-SHEET 6.

lli Y V Half. V

NITE?. ST 'FEES ar i? eerie WALTER R. SCOTT, or PHILADELPHIA, PENNsLvANIA.

LACE-MACI-IINECARRIAGE-TREADING MECHANISM.

Application led May 4,

, Threading Mechanism, whereof the following is a specification, reference being had to the accompanying drawings.

My invention is designed and adapted for use in connection with the shuttles, called bobbin carriages, of the type employed in what are known as Jardine lace machines, to

receive the carriages containing bobbins from which the thread has been withdrawn,

discharge the empty bobbins, and then` charge such carriages with bobbins filled with thread, insert the free ends of the respective threacs through the guide openings of said carriages, in operative position, and

deliver the carriages thusthreaded in stacks of fifty; the two operations of threading and unthreading being effected simultaneously, upon different carriages, by cooperation of the various elements of said mechanism. However, it is to be understood that I do not desire to restrict my invention to the specific type of shuttles aforesaid.

illy invention includes the various novel features of construction and arrangement hereinafter more definitely specified In the drawings: Figure l is a front elevation of a machine conveniently embodying` my invention.

Fig. 2 is an elevation of the left hand end of said machine, as shown in Fig. l.

Fig. 3 is a vertical sectional view 'of said machine, taken on the line A, A, and inthe dire ion of the arrows indicated in Fig. l. Fig. lis a plan view of said machine.

Fig. 5 is a plan sectional view showing the lower rotary carrier provided with the holders into which stacks of carriages and bobl fiftv of the carriages or bobbins which it is l adapted to hold and is then withdrawnandanother holder presented in receiving -position.

Fig. 6 is a fragmentary sectional view showing the means for locking said carrier Speccaton of Letters Patent.

. tend n Patented July 13, 1920.

i916. seriai No. 95,508.

shifting mechanism in idle position and rey leasing said locking means.

Fig. 7 isa fragmentary plan view of th upper portion of Fig. 4.-, but on a larger scale. c

Fig. 8 is a fragmentary radial sectional view of .certain parts of said machine shown in F ig.` 7, including thel mechanism for charging the bobbinsinto thecarriages.

Fig. 9 is a fragmentary sectional view of certain of the parts of said machine shown at the right hand side of Figs. 7 and 8; buttalen in the direction opposite to that of Fig. 8'. n

Fig. l0 is afragmentaryY sectional view ltaken on the line B, B in the direction ofthe arrows indicated in Fig. 7.

Fig ll is a fragmentary radial sectional view, showing one of thel diametrically op-` posite oscillatory fingers for Vdischarging the bobbins from said carriages. f

Fig. vl2 is a plan view of one of the thread-V ed carriages above coiiten'iplated; that is to say, a carriage in which ya bobbin is fitted in position to be retained by the tension spring of the carriage and with its thread extending through the guide opening therefor in the carriage; said elements being inthe ce-v operative relation in which theyV are dischargedfrom said machine. Said elements are in the saine relation when they arereceived by saidmachine, with the exception that the bobbin is then devoidof thread.

Fig. V12 is a `lower edge view of the car-l riage and bobbin as shown in F ig. 12. is abase plate having the lever il which is fulciumed at l2 on said base plate i and has its upper end pivotally connected at 13 with the slide rod lli having handles at its opposite ends.

Said shaft 5 has rigidly mounted thereon the Ager-ii"pinion 17 engaged with the gear 18 on the crank shaft i9 which is journaled lin icov said'standards Zand 3, as best shoivniii Fig. y l. and has at its inner end the crank 20 eX- through the box 2i. which 4is fitted to 'slip dicated in Figs. l, 2 and 5. Said levei' 23 is ulcrumed on the stud 24 Which is rigidly connected With the stationary sleeve 26 Which is rigidly'connected with said standard 2 as best shown in Figs. l and Said standard 2 is slotted at the top thereof to` receive the cross bar 27 which supports the column 28 which is also slotted to tit said cross bar 27, so as to be held in rigid relation with said standart 2. Said sleeve 26 is fitted upon said column 28, as Vshown iny Fig. 3and is rigidly connected with said standard 2 by the bolts 8() shown in F ig. l. Said sleeve 26, has, at itsloWer portion, the circular flange 31 which is, hoivever, eccentric with respect to said column v28, as best shoivn in Fig. 5. Said flange 3l to hold stacks ot fifty carriages and bohbins,

and provide the inner circumference of said carrier ivith a series of eight notches 89 whereby it'niay be shifted stepby step, oneeighth of a. revolution at a time, 'as said holders are filled; the movement olf said carrier being. eiiected in proper sequence With'the other movements oit the .machine after titty discharging operations oit' the latte, such movement being conveniently eifectedby' the mechanism shown in liig. 5 and including the gear vracl; 40 which is mounted to reciprocate horizontally in the stationary bearings 4l, on said sleeve and is reciprocated, once ttor each of said discharging operations, by engagement of its stud 42 in the bonv 43 which slides in the slot 45 in the upper end of said lever 23. Said rack 40 engages the sectoral gear 46, which turns loosely on said column 28, and said gear 46 engages the sectoral gear 47 4which turns loosely o n the shaft48 (indicated in Figs. 1 and which is journaled in said stationary frame sleeve 26.l Said Y shaft 48 has, rigidly connectedy therewith,

the arin49, best shown in Fig. 5, which carries at its outer end the paivl plunger 50 having the spring 51 tending to press it into engagement with the notches 39 in said carrier 34, whereby the latter may be shifted said con-

nor-

one-eighth or' a ievolution each time normally loose gear 47 is operatively nected with said yshaft 48 on which it mally oscillates idly. Such operative connection is effected by the arm 58V on said gear 47 which extends radially with respect to said shaft 48, in position'to encounter the lockingvp'lunger 5,4 (shown in Figs. 5 and 6) when said plunger is raised by its vented by the detent pawl 66 (shown in F operation above contemplated, carries spring 55 into engagement with said,V arm Said plungerV 54 is carried by the arm 56 Which is rigidly connected with said shaft 48. However, said plunger 54v is normally held down, in theV idle position shoivn in Fig. 6, by the lever 58 Which has the arm 59 by which it may be operated to release said plunger, as hereinafter described, and is fiilcrunied on the stud 60, carried by said stationary frame sleeve 26, and is normally held in the position shown in Fig. 5 by the spring 6l connecting said lever with said stationary traine member The end of said lever 58 which is operative upon said plunger 54 extends in concentric relation With said shaft 48 so that said arm may slide freely With respect to said level' 58 Without movement of the latter.

Said rack 40 carries the paivl V62 having the spring` 6,3 normally pressing it into engagement with the ratchet Wheel 65Vivhich.

also turns loosely on said stationary col.

column 28.V Said ratchet65 has fifty teeth Which are successively engaged by said pawl 62, and is tur-ned to the extent of onetootn at each reciprocation of said rack 40; re-

verse movement of said ratchet being prewhich is pivoted on said stationary stud 60, and pressed into engagement with said ratchet by the spring 67 extending 'from said paivl 66 in connection with said stationaryy frame member 26. Said ack 40 is recipi'o- Y cated once 'for each operation o the ina- Y chine by which carriages and bobbiiis are simultaneously discharged into .the respective holders 35 and 36, and the purpose oil' said ratchet 65, and its appurtenances,is to 1 render the movement oi said rack 49etl'ective to shift said carrier 34 ene-eighth of a revolution, alter ef'ery titty discharging op!y erations, and thusV remove from re eiving positionthe holders 35 and. 86. which have beenilled With respective stacks Vot litt oi? said carriages and bobbins,aiid successively present emptyv holders 35 and 36 in receiv-V ing position. For that purpose, said ratchet Wheel 65 also carries Vthe cam projection 69 (shown in Fig. adapted.-.to encounter said arin 59 of said lever 58, and move the latter to release said locking plunger 54; thus permitting the latter to rise and couple said gear 47 With saidarrn 56 to turn said sha'l't 48 and thus turn said arm 49 Ato engage one of said eight notches 89 in said carrierll is automatically returned. to the position g shoivn in Figs. 5 and6 by its spring 6l@L Said gear 46, which is oscillated, lo on said column 28, once for each dischargin tlif.

l1 i oA 12,0 f and thus turn the latter one-eighth of a revo# Vwith the guide studs S5 projecting upwarch i yoke 72 which7 as indicated in Figs. 3, and 7 is arranged to turn loosely on said stationary column 2S and has diametrically opposite arms, each carrying at its outer end a pawl plunger 73 having a spring 7 e tending to press it into engagement with the eight ratchet Vteeth 75 on the lrotary carrier 76 (best shown in Fig. 7 which is mounted to turn on the track 7-7 in the stationary frame table 7 8 which is rigidly connected with the anular upper portion of said sleeve 26.l Said carrier 76 has a plane horizontal flange extending circumferentially therefrom and conveniently formed of vsectors of sheet metal having' a circumferential series of openings 81 each adapted to receive'one of the carriages S2; said flange S0 being but slightly thicker than saitL carriages. carrier 7 o stops with' respective openings 8l therein in registry with openings 88 in dianietrically opposite base plates Se (shown in Figs. l and 7) which are rigidly connected with and supported by said table 7 8, and,

therefrom form holders Ythrough which stacks of said carriages 82, containing empty bobbins 86 are introduced to the machine. The bobbin carriages in the respectively opposite stacks automatically gravitate into "the openings 81 in said flange 80 of the rotary carrier whenever said openings yare presentedin registry with saidholder openings 83; so that with each stop by step turn- Y .ing movement of said carrier 7 o, 'two of said carriages are withdrawn from the bottom of the stacks (one from each stacln) and swept along by said flange 80, said carriages resting and sliding upon the `plane top ofsaid table 78. 1 V

As indicated in Figs. 3, 12 and 13, each of said carriages 82 .is a plane Ysheet metal plate having an approximately Vcircular recess v88 in which -a bobbin 86, which is the saine thiclzuess as said carriage, is held liyfthe arenal flange 89 of the carriage which eX- tends intermediate; of the thickness of the latter between the opposite end flanges 90 of Vsaid bobbin which v*conflne`- the thread 9,1 thereon.; said flanges 90 being rigidlyconnectcd withthe hub 92 of the bobbin. Said bobbiu is hel(L infconcentric relation with said carriage flange S9 by the tension spring 95 which is rigidly connected with said car! ringe at one end Yand hasits free end pro- Vvided with the projection 96. which -ts be tween said flanges 90 of the bobbin. To re! lease the bobbin from the carriage, it is necessary to thrust said spring 95 radially outward with respect to the bobbin axis until said projection 9o is disengaged from ibetween the bobbin flanges 90, and to. move the bobbin in the saine direction until it is freed from said arcual carriage flange 89. To replace a bobbin in a carriage, in the operative threaded position shown in 19, it is nec- Said l tions; said opening beingsquare to `re-y essary to slide the bobbin in the reverse direction, at a slight angle with respect to the plane of the carriage, so that said carriage liange 89' will beengaged between'the bobbin flanges 90, and, while the bobbin is thus engaged, to press the spring 95 radially outward with respect to the bobbin and re-A lease it so that it ,will snap` inwardly with its projection 96 between the bobbin flanges. Thereupon, the loose end 'of the thread 91 is drawn down through the guide opening 97 in the carriage; the margin of said'opening 97 beine' recessed, to about one. half the" thickness or the carriage, as indicated at:98, to permit the free passage of said thread "to` said opening 97 Without scraping the edge of the recess 88. vAs indicated' in lllig. '12* each of said carriages 82 is provided with two openings 99 whereby it maybe engaged and held during the operations of' dischargn ing and replacing the bobbins, and each ofV the latter. has a central opening v100 by which it may be engagedfor such operan ceive a mandrel upon which the ybobl'iins may be wound. The elements ofthe mecha# nism for discharging the bobbins are con-",v

veniently mounted upon the lift frame 101,

(best yshown in Figj) which is fitted to',l

slid i axially' upon said column 28 but prcprojecting from said column in engagement with the hub of said lift frame, vas shown in Fig. 7. Said frame is raised'and lowered by links 104 which, as shown in Figs. 1 andV vented from turning thereon by keys 102 3arevpivotally connected withone end of the rock lever 105 which is fnlcrunied, intermediate of'V its length, at 106 in the bracket 107 which is rigidly connected withl the upper end of saidcoluinn 2S. -The opposite end of said rock lever105 is pivotallyY connected, by the link 109, with the upper end of the rectangular bar lldwhich "is,-4

mounted to `reciprocate vertically in the bearingsV 111 on said frame standard 43 4and has at the lower Vend thereofvthe roller 113 f for contact with-the cam 1111, ywhich is rigidly connected 'withsaidcrank shaft v19; said vroller being maintained inv operative rclationwith said cani by the'spring 115 which is seated. in the upper endy of said f column 28 and-bears upon the' .adi acont endv of said rock lever 105, as indicated in Fig. 1.

Said cam 114 isV turned in the direction of f the effect of permitting said lift-*frame 101 to be raised and upheldby said springrll,

in .idle position, indicated by the dotted out- `line of saidrock shaft 105 in Fig. 1 during approximately three-fourths of each 'reve-ln? tion of said crank shaft 19, and lowering said lift frame into the operative position. shown in the drawings, during approxi-hf mately one-fourth .of each revolution of said crank shaft 19,(by the action of said cam has four arms.

Y are radial with respect to the aXis ofV rotavtion of said carrier -7 6 and in registry with dianietrically opposite openings 81 in said carrier; are provided with the elementsV of they mechanism by which the empty bobbins are discharged from the carriages while the latterare held in said openings in the flange 80 of saidV carrier. Each of said arms 117 has a pair of pendent studs 119 which, when said lift frame is in operative position, ek-

tend through the openings 99 of the carriagesl 82 which are then in registry therewith, as indicated in Fig. 11; whereby said carriages are Vsecurely held during the operation of discharging the bobbins therefrom. Each of said arms 117 has fulcrunied at the outer' end thereof, ona pin 120, an oscillatory finger lever 121 having at the lower end thereof a nnger 122 which, when said lift frame is lowered to the position shown in Fig. 11, extends into the axial opening 100 of the bobbiii in the sub] acent carriage, said finger 122 being then in the position indicated by the dotted lines in Fig. 11. Said levers 121 also carry wedges V123 which, -when said frame is lowered to the position show-n in Fig. 11, extendY between the outer edges of the bobbins and their respective springs 95 and press said springs outwardly to'release them from engagement with the bobbins, to permit the discharge of the lat-V ter. Said levers 121 are oscillated by respective links 124 which are piv'otally connected with the bell crank levers 125 (shown in V.mi

Figs. 4 and 7) which are rigidly connected with the vertical shafts 126 journaled in' said lift frame 101, as indicated in Fig. 8. Said levers are normally maintained in the position shownin Figs. 4. and 7, against the adjustable stops 128, by the springs 129 connecting said levers.with said frame 101 such position corresponding with the position of said finger lever 121 indicated in dotted lines in Fig. 11. However, said shafts 126 each have, rigidly connected with their lower ends, arms 130 provided with rollers 131 adapted to encounter the respective cams 132 carried' by said yoke 72; whereby said finger levers 121, are thrust to the position shown in full lines in Fig. 11 and thus discharge the bobbins fromY the twocarriages 82 which are then respectively in registry with said two arms 117. The empty bobbins 86 thus discharged from said carriages 82 gravitate down the respective chiites 134 which are rigidly connected with the stationaryV frame table 7 8 as indicated in Figs.

7 and 11 and are thus dropped Vinto the holdmy loose end of thread 91 which must Ybe ultimately threaded through the opening 97 in a carrier 82 as Vshown in Fig. 12, and, in order to control said loose ends lI provide lrotary lcombs 140,l each including a 'circum-y I ferential series of six blades Ahaving teeth which engage the thread'ends which are presented thereto by the operator; so that rotation of said combs in the direction indicated by theV arrow on Fig.7se] 3arates said thread ends in proper order and places lthe threads under tension from the combs to the'- bobbins. lSaid combs are merely frictionally fitted uponspindles 141, so th at they may be readily turnedby hand. However, each of said spindles 141 is provided at its lower 'end i Y Vwith a ratchet wheel 142, as indicated in Fig.

8, whereby said combs maybe automatically turned in definite relation to the operation of the otherelements ofthe mechanism. Such operation is effected by respective pawls' 143,'. Y l pivotally .connected with` arms V145 which are mounted to turn loosely on said spindles 141 and oscillated by links 146; the latterV being pivotally connected with studs 1477011A Y the slides 148 which are fittedto recipro-V f cate, radially to theaxis of said carrier 76, in the channels 150 of the brackets 151 which support said holders 137, shown in Fig.`

table 78. Y Said slides148 have vertical ribs 9, and are rigidly mounted upon said frame Y 153 in sliding engagement with the heads of Y the crankQblocks 154 which are pivotally connected withthe cranks 155 on the cam shafts -157 which areinonnted in said i brackets and have at the outer'ends thereof Y sprock'etwheels 158 which, as shown in Figs.

1,2 and 3, are operatively connected by the chains 160 with the `sprocket wheels 161 on the counter shafts 162 which are journaled atV their respectively opposite ends on the. l

standards 2 and 3, as shown infFig, 1, 'and have sprocket wheels 164 connected by the chain 165 engaging the sprocket wheel 167 on said crank shaft 19';` wliereby said cam shafts 157 lare simultaneously turned to rel vciprocate said slides 148 indefinite relation to the operation of Vthe other mecl'ianisr'nsV above described, and the members 169V` on said slides 148 (which are ofthe same thick ness as a single bobbin) respectively the bottom bobbins 86 in thev stacks in said holders, as said bobbins gravitate singly,

through the openings 138, and thus thrust them toward the carrier 76 in proper time to introduce said bobbins to the carriages 82 presented by said carrier in registry with the diametrically opposite radial arms 170 said lift frame 101.

Each of said arms 170 has a pair of pendent studs 171 which, when said li'lit trame 101 is in operative position, shown in Figs. 8 and 9, extend through the openings 99 of the carriages 82 whichV are then in registry therewith; whereby said carriages are secur-ely held during the operation ot charging them with iilled bobbins and threading them. YEach of said arms 170 also carries at the outer end thereof, a presser bar 178 which is pendent Vtheretromkupon screw studs 1.741 having springs 175 pressing said bar downward, so that it resiliently rests upon the subjacent carriage 82 across its recess 88 and serves as a guide Jfor the upper surface ott the bobbins'86 which are thrust thereunder into engagement with the arcual ribs 89. Each of said litt arms 170 has Jfulcrumed at the outerend thereof, on a pin 177, an oscillatory linger lever 17 8 having at the lower end thereof a linger 179 which, when said lit rranieis lowered to the posishown in Fig.r 9, extends into the axial d10 of the bobb'in 86 then presented ation therewith by the inward by respective links 181 which connect-cd with said bell crank l oscillatory finger levers 178 are coiitemporaneously with said iin- .121,by theaction ofrsaid cams V p However, although the are positively actuated by ik, linger levers 178 are reatly actuated by their links 181, the latter being` 'formed of two telescopic sections which are connected by the' pins 182 which are uorinaly thrust to the inner ends oic the slots 188, as indicated in Fig. 7, under pressure oi" respective spri-.

members ot said links 181; the arrangement being such that said rock arms 125 tend to mov-e said lingers 148 to a greater extent tha i the tension springs 95 ot the respective car- 'iaees with the threaded bobbins which rave thus been fitted therein, I provide leans to draw said springs outward and rel-ase them so that they will snap into ennent with the flanges 90 ot the reltive bohbins, with the springprojections icc-tween said flanges as indicated in Fig.

die slide 118. Said levers 178.

gs 18st in the tubular 12. Such means is illustrated in Figs. `7 to 10 inclusive and comprises levers 186 fulcrumed upon respective studs 187 upon diametrically ,opposite sides of said table 78, one of them being shown in Fig. 10 and each of them being provided with a spring 188 encircling it and pressing said levers y downwardly in opposition to jam nuts 189 by which the vertical position of said levers may be precisely adjusted so that the end 190 oit said lever shall sweep the lower surface of each bobbin so as to catch and outwardly deect the end of the carrier spring 95 which nect them with said'brackets 151, and re-,`

verse movement of said'l'evers 186 is effected ,by thrust bars 193 on the respective slides i 148 which engage the ends 194 of said levers 186 as indicated in Figs. 8 and 10.

As .shown in Fig. 10, each of said base plates. 187. has a slot 196 which extends transversely to said arms 170 and 4serves as a guide for the threading hook 197 which is reciprocated therein by the link 198 with which it is rigidly connected; each of said links being`pivotally)connected with respec-r tive levers 200 which are tulcrumed at 201 on'said brackets 151, as indicated in Fig. 7. Referring to Figs. 9 and 10; it may be observed that each of said hooks i197 is 'con- 'veniently formed as a cylindrical member having an annular groove immediately adjoining its lower end so as to have a hooked configuration throughout its circumference and thus vinsure its hooking engagement with the-thread 91 regardless of the particular angle at which it encounters said thread. Said levers 290 have rollers 202 bearing upon. canis203'by which said levers are .actuated against the pressure ot struts 205 which include two telescopically relatedv memberswith a spring 206 between them. The threading movement of said hooks 197, toward the right inFig. 10, carries the bight of the thread' 91, (extending under tension from the. bobbin 86 to the comb 140) into engagement with the needle 208 (shown in Figs. `9 and 10), as said needle rises through: the opening 97 in the carrier 82 then inA reg,- istry therewith; so that, as said needle, (which ias a do vnwardl-y hooked upper end, like a fine Crotchet needle, as shown in JFig. 9,) descends, it draws said thread through said opening in the carriage, vand the immediately.succeeding movement ot the carrier 76 sweeping said carriage 82 cir# position, as in Fig. As shown in Figs. 9 and 10; said needle 208is carried by the bar 210 which is mounted to reciprocate vertically in the bearing 211 which is rigidly Vconnected with said frame table 78; but

' 'in Fig. 2, respectively fulcrumed on studs v 217 ony the brackets 151, and each of said levers has a spring 218 connecting .it with an adjacent stationary portion of the machine; whereby each needle 208 is raised to engage the thread 91 as above described; the eii'ect of said springs 21S being opposed by respective cams 220 on said cam lshafts 157;

whereby, said needlebars 210 are held down in the inoperative position shown in F igs.V 9 and 10 except during their practically iii-- stantanecus i threading operation above described. y

The operationy of said machine is as follows: BeginningV with the lift frame 101 in its lowermost position, as shown in Fig. 3 and the other general views, holdingV two carriages under said lift arms 117, for the discharging operation, andv two under the lift arms 170, forthe charging operation, and'with the other elements of the mechanism in corresponding positions; rotation of the main driving shaft 0 in the direction indicated bythe arrow in Fig. 2 contemporaneously causesvthe bobbin slides 109 to begin their outward movement, (leaving two threaded bobbins S6 engaged by the respective oscillatory fingers 179 on said arms 17 0) the threading hooks 197 to begin their threading movement, the thread combs 140 to begin toturn in the direction indicated by the arrow in Fig. 7, and the oscillatory fin-V gers 122 Vand 179130 simultaneously begin ltheir movements of respectively putting the bobbins out of and intoV the respective carriages'82, thus held. VThe springs 95 of the two vcarriages 82 lieldfbeneath the lift arms 117 being disengaged from the empty bobbins 86 therein, by the wedges 123` on the finger'levers 121, when said lift frame was lowered, slight movement of said levers suffices to discharge those bobbins into the respective chutes 134:, from which they gravitate into respective holdersBG on the-then stationary-lower rotary carrier 34. Conteniporaneously, the two' carriages 82 held beneath the lift arms 170 have said two threaded bobbins 86 pressed into engagement with the respective carriage flanges 89. Thereupon, the two threading needlesr 20S rise through the openings 97 in said two bobbins S6,undersaid arms 170 the springs 95 of the two carriages in which those bobbins are fitted are thrust'outwardly, by the levers 186, l

and snapped into engagement between the circumferential flanges 90 of said bobbins,

and the ends of the threads 91 of those .two bobbins are brought, by said hooks 197, into engagement with said needles 208. As saidl bobbin slides 169 reach the outer limit Vof n their movement, the combs 140 stop, the needles 208 are lowered, thus threading the two carriages 82 under said lift arms 170,`

- eighth revolution of said carrier, in the VYdirection of the arrow indicated in Fig. 4, and the thread hooks 197 return to their normal idle positions indicated in Figs. t and 7. lVhile said carriages 82 are being thus shifted, the bobbin slides 169 move inwardly, to"- ward said lift arms 170, each carrying'a bobbin S6 from the bottom of the stacks in their respective holders 137, so as to present them as far inward as possible before the cari'ier 76 stops. Said carrier `76 then stops and said bobbin slides 169 continue inwardly, and the lift frame 101 comes down, to the initial position shown g. their respective movements endingV simultaneously. When said carrier 76 stops; the two carriages 82 from which the empty bobbins 8,6 have been discharged, beneath said lift arms 117, are

charged with filled bobbins and threaded Vas above described, but the two carriages 82 which have vbeen thus charged, beneath the lift arms 170, are respectively presented in registry with the two, diametricallyV opposite, openings 221 in said stationary table v7S, .(one of which is indicated in dotted lines in Fig17) so that they fall from the openings 81, in said carrier 76, through said openings 221, into the chutes 223 from which presented beneath said lift arms170 to be los they fall into respective holders 35 Von said i lower rotary carrier 341. Said carrier 34 remains stationary during fifty such discharging operations, and then turns one-eighth of a revolution, conteinporaneously with lthe turniiiggmovement of said upper carrier 76,V

but in the opposite direction, to withdraw, from receiving position, the holders 35 and 36 which have been respectively filled with stacks of fifty threaded carriages 82 and empty bobbins 86, and V.present otherA such of'my invention, as defined in the append-U y ed claims.

I claim 1. In vlace machine lcarriage threading hold unthreaded cari'iages singly, foroperationthereon, in circular spaced relationto the axis of said upper carrier; the lower carrier having means arranged to hold'threaded carriages in stacks, for delivery; said upper carrier being arranged to successively dropv empty bobbins and threaded carriages through said discharge openings into the holding means on said lower carrier; a lift frame operatively connected with said shaft,

nged to reciprocate to and from operative .relation with said upper carrier; mechanism on said lift frame arranged to discharge empty bobbins from said carriages in said upper carrier; mechanism on said lift frame,

arranged to charge the emptied carriages, in said upper carrier, with threaded bob1 ins; and mechanism arranged to insert the free ends of the bobbin threads in threaded relation with said carriages.

2. ln lace machine carriage threading mechanism, the combination with a stationary frame; of a driving shaft journaled in said frame two rotary carriers, one above the other, operatively connected to be turned by said shaft; the upper carrier having' means arranged to hold unthreaded carriages singly, in spaced relation; the lower carrier having means arranged to hold threaded carriages in stacks; said upper carrier being arranged to drop empty bobbins and threaded carriages into the holding means.A

on said lower carrier; a lift frame operatively connected with said shaft, arranged to reciprocate to and from operative relation with said upper carrier; mechanism on said li'lt frame arranged to discharge empty bobbins from said carriages iii said ripper carrier; mechanism on said lift frame arranged to charge the emptied carriages, in said upper carrier, with threaded bobbins; and mechanism arranged to insert the free ends of the bobbin threads in threaded relation with said carriages.

lu lace machine carriage threading mechanism, the combination with a stationary frame; of adriving shaft journaled in said frame; two rotary carriers, operatively connected with said shaft for step by step rotation; one carrier having means arranged to hold unthreaded carriages singly, in spaced relation; the other carrier having means arranged to hold threaded carriages in stacks, for delivery; the first carrier being arranged to successively discharge empty bobbins and threaded carriages into the holding ineens on said other carrier; a frame operatively connected with said shaft, arranged to move to and from operative relation with said first carrier; mechanism on said frame ari nged to ldischarge empty bobbins from said carriages in said lirst carrier; mecha:

nism on said frame, arranged to charge the emptied carriages, in said first carrier, with threaded bobbins; and mechanism arranged to insert the free ends ofthe bobbin threadsv `in threaded relation with said carriages.

l. ln lace machine carriage threading mechanism, the combination with a stationary frame; of a drivingshaft journaled in said frame; a rotary carrier, operatively connected with said shaft for step by step rotation, and having means arranged tohold unthreaded carriages singly, in, circular spaced relation to the axis of said carrier; said carrier being arranged to successively discharge empty bobbins and threaded carriages; a lift trame operatively connected with said shaft, arranged to reciprocate to and from operative relation with said car ier; mechanism on said lift frame arranged to discharge empty bobbins from carriagesin said 'carnier; mechanism on said lift frame arranged to charge the emptied carriages, in said carrier, with threaded bobbins; and mechanism arranged to insert the free ends of the bobbin threads in threaded relation with said car-l riages.

V5.111 lace machine carriage threading mechanism, the combination with mechanism arranged to discharge empty bobbins from such carriages; of mechanism arranged bobbinr charging mechanism, links respectively extending from said lever to said mechanisms, lone vof said links comprising relatively movable sections and a spring tending to elongate said link, whereby that link is automatically variable in its effective length between said lever and said charging mechanism; and means arranged to rock said lever to an extent greater than required for movement of said charging mechanism; i

whereby said bobbins are resiliently thrust into engagement with said carriages, against the pressure or saidspring.

6. ln lace machine carriage threadingY fia ing Vaguide slot engaging said hook, and

affordinga fulcium for said link; and actuating means arranged to cooperatively `thrust Vsaid needle through said opening,

move'said threading device to thread the needle, and retract said needle; whereby said 'carriage is threaded; and means arranged to YopeningV in registry with said needle; a 'threading device including a hook movable to engage a thread with said needle; guiding means limiting the movement of said hook toasubstantially straight line; hook actuating means, 'including an oscillatory linl: fulcrumed on said guiding means and having said threading hook at its center of oscill'ation;'and actuating means arranged to coperatively thrust said needle through said opening, move said threading device to thread the needle and retract said needle; whereby said carriage is threaded.

8. In lace machine carriage threading mechanism, the combination with a trame; of two rotary carriers, mounted torotate on said frame and each having carriage holding means; the holding means in one carrier beinO adapted to cooperate with the holding means Vin the other carrier in one position of relative rotation of said carriers; and means Yarranged to relatively move-said carriers and successively present each ot the holding means in one carrier in cooperative relation with the holding means in the other carrier, including a ratchet Wheel in concentric re lation with one of said carriers, a reciprofatory pawl arranged to turn said ratchet wheel step by step, a cani projection carried by said ratchet wheel, and coupling means` arranged to be operated by said cam atter predetermined numbers of said pawi movements; whereby one of said carriers is turned only after a series ot turning move-V ments of the other carrier. Y

9. In lace machine carriage threading mechanism, the combination with a carriage, having a spring adapted to engage a bobbin in said carriage; of means arranged to charge Vsaid carriage with a bobbin, including a lever arranged to directly engage -and move said spring into engagement with said bobbin, and means arranged to hold said cairiage stationary during such movement.

l0. In lace machine carriage 'threading mechanism, the combination with a carriage Y having a spring adapted to engagea bobbin in said carriage; 01"' Vmeans arranged to charge said cariiage with a bobbin, including a lever, fulcrumed on an axis extending parallel with the axis of said bobbin and arranged to directly engage and move said spring intoengagement with said' bobbin.

l1. In lace machine carriage threading mechanism, the combination with a holdei' for a threaded bobbin, adapted for coperation with oneot1 said carriages; otmeans arranged to engage and hold the tree end of the thread from said bobbin, under tension,

including a rotary comb and means ar- 75 rangedto turn said comb in engagement with said thread end a guide plate limiting the passage Vot said bobbin to threading position and limiting the position of the thread extending from said bobbin; and a thread hoolr, extending parallel with the axis of said Vcomb Aand having means 'to move it transversely to engage-said thread between- Y said bobbin and said comb. Y

l2. In lace machine carriage threading mechanism, the combination with a stack holder ior bobbins for said carriages; of a i'eciprocatory slide arranged to feed bobbins singly from said stack; means arranged to hold in order the free ends of threads respectively extending from said bobbins, in-

chiding a rotary comb, and means operated 'passage of said bobbin to threading position Vand limiting the position of the threadex- `tending from said bobbin.

' ld. In lace machine carriage threading mechanism,.the combinationy with a frame; oi2 a vertical shait supported by said frame; means rigidly connecting said shaft with said frame; a rotary carrier mounted to rotate coaxially about said shaft; a second rotary carrier, larger `than said irst carrier, arranged to rotate eccentrically about said'shatt; means on said first carrier arranged to hold carriages singly, in a Vcircular series; means on said second carrier,l including a circular series of stack holders, each'arranged to hold a stack oi' carriages; means on said second carrier, including a second series of stack holders, each arranged to hold a stack ofrbobbins; the carriage holding means in said first carrier being adapted to copeiate with the carriage holding means in said second carrier in one position of relative rotation of said carriers; cooperative means arranged to relatively turn said carriers, s tep by step, whereby, each oi the carriage holding means in the iso each `of the carriage holding means in the first carrier is adapted to successively cotate coaxially about said shaft; a second Y operate with each of the'bobbin lholding 'V means in the second carrier; and means arranged to direct bobbins from the holding -means in said first carrier to, the'holding carriages singly, in a circular series; means on said second carrier, including a series of stack holders, each arranged tohold a stack of bobbins; the carriage holding means in said first carrier being adapted to cooperate withl the bobbin holding means in said second carrierin lone position of relativerotation of said carriers; Vcooperative means arranged to relativcl turn saidV carriers Y z; t 9

Whereb each ofthe carriageV holding means in theV rst carrier is 4adapted to successively cooperate With each of the `bobbin holding I meansin the second carrier; and means arranged to direct bobbins from the .holding means in said first carrier tothe holding Y means in said second carrier, Awhen in, co-

operativerelation therewith. i

21. In lace machine carriage threading mechanism, the combination .with a frame;

of a vertical shaft supported by said frame;

vmeans rigidly connecting said shaft with said frame; a rotary carrier mounted to rorotary carrier, arranged to rotate eccentrically about said shaft; means on said first carrier arranged to hold carriagesV containing bobbins singly; means von said second' carrier,- arranged to hold carriages and boby bins separately; the carriage holding means in said first ycarrierhx-iing adapted to `co- 1,346,790 n y L operate with both the carriage and bobbin holding means in said second cari-ier in one position of relative rotation of said carriers;

cooperative 'means arranged -to relatively turn said carriers, step by step, whereby, the

carriage holding means inthe first carrier' is adapted to cooperate with the carriage and bobbin holding means in the second carrier; and means arrangedto direct Aboth carriages and bobbinsV from the holding means in said first carrier to the holding operativeY relation therewith; Y

22. yIn lace machine carriage threading mechanism, the combination With aframe;

vmeans in said second carrier, Whenxin'coof a shaft supported by said frame; a rotary VcarrierV mounted to rotate coaXi'ally aboutv said shaft; a second rotary carrier, arranged to rotate eccentrically about Vsaid shaft;

means on said first carrier arranged .to hold carriages containing bobbins, singly; means riagcsand bobbins separately; the carriage holding means in said yfirst carrier being adapted to cooperate With both the carriage and bobbin holding means yin said second' carrier in one position of relative rotation of said carriers; cooperative means arranged to relatively turn said carriers, step by step,

whereby, the carriage holding'means in the' first carrier is'adapted to cooperate with the carriage and bobbin holding-means in the Y vsecond carrier; and. means arranged to direct on said second carrier, arranged to hold car- ,Y

both cairiagesand bobbins from the/holdingv means in saidrst carrier to the holdingY means in said second carrier, when in co-` operative relation therewith;Vv

In testimony whereof I' have hereunto signed my name at Philadelphia, Pennsylvania, this 19thY day of April, 1916.

WALTER ii. scorri?.l

Vitnesses n Y THoMAsAJCoUrn, ROBERT L. MoDiiviTT. 

